(19)
(11) EP 1 179 716 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.03.2002 Bulletin 2002/12

(43) Date of publication A2:
13.02.2002 Bulletin 2002/07

(21) Application number: 01117124.6

(22) Date of filing: 13.07.2001
(51) International Patent Classification (IPC)7: F25B 41/06, F16K 31/68
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 10.08.2000 JP 2000242272

(71) Applicant: Fujikoki Corporation
Tokyo (JP)

(72) Inventors:
  • Minowa, Masakatsu
    Setagaya-ku, Tokyo (JP)
  • Watanabe, Kazuhiko
    Setagaya-ku, Tokyo (JP)

(74) Representative: TER MEER STEINMEISTER & PARTNER GbR 
Artur-Ladebeck-Strasse 51
33617 Bielefeld
33617 Bielefeld (DE)

   


(54) Thermal expansion valve


(57) A heat transmission retardant member 140 which is a cylinder-shaped resin tube made of nylon or polyacetals is mounted between an adsorbent 40 and an inner wall of a hollow portion of a heat-sensing driven member 100 with a space 140' between said inner wall. The hollow portion of said heat-sensing driven member 100 includes said adsorbent 40, said heat transmission retardant member 140 made of resin, and said space 140'. Said heat transmission retardant member 140 comprises plural protrusions, and by positioning said protrusions to contact said inner wall, said space 140' is formed. Since said space 140' is formed between said inner wall of the hollow portion of said heat-sensing driven member 100 and said heat transmission retardant member 140, not only is the heat transmission to the granular activated carbon delayed by the heat transmission retardant member, but said space also effectively delays the transmission of the temperature variation of the refrigerant to the heat transmission retardant member. Thus, hunting of the valve is even further effectively suppressed.






Search report